PMID: 11315654Apr 24, 2001Paper

Stress analysis of different wall thicknesses of implant fixture with various boundary levels

Journal of Medical Engineering & Technology
H M HuangC T Chen

Abstract

The aim of the present work is to develop 3D finite element models of implant fixture with different wall thicknesses to predict maximum stress concentration sites and distribution contours after loading. A maximum lateral force of 150 N was applied to simulate horizontal occlusal forces. When the fixtures were constrained to simulate different boundary levels, the maximum equivalent stress (max EQV) was always located at the implant-bone interface. Max EQV increased when the wall thickness or boundary level was reduced to a certain extent. The fixture with a wall thickness of 0.97 mm demonstrated the smallest stress increase ratio when the boundary level was lowered. Our results indicated that both wall thickness and the boundary level played important roles in maintaining a well-distributed stress level within the fixture. The stress concentration decreased when the fixture wall became thicker, however, this effect was less significant when the surrounding bone level was reduced.

References

Sep 1, 1992·Clinical Oral Implants Research·M QuirynenD van Steenberghe
Jul 1, 1991·Clinical Oral Implants Research·S PalmqvistD Arnbjerg
Aug 1, 1990·The Journal of Prosthetic Dentistry·I P van RossenK de Groot
Apr 1, 1995·Journal of Dentistry·D BrownD C Watts
Jan 1, 1995·Journal of Applied Biomaterials : an Official Journal of the Society for Biomaterials·H VaillancourtD McCammond
Apr 1, 1997·International Journal of Oral and Maxillofacial Surgery·C J IvanoffU Lekholm
Dec 10, 1991·Clinical Materials·J B Brunski

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Citations

Apr 21, 2009·Journal of Prosthodontics : Official Journal of the American College of Prosthodontists·Xi DingHong Chen

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